@article{oai:kumadai.repo.nii.ac.jp:00022198,
 author = {Deguchi, Toshio and 出口, 俊雄 and 田中, 明 and Tanaka, Akira and 實政, 勲 and Sanemasa, Isao and Nagai, Hideo and 實政, 勲 and 出口, 俊雄 and 田中, 明 and Tanaka, Akira and 実政, 勲 and 永井, 英夫},
 issue = {1},
 journal = {分析化学},
 month = {Jan},
 note = {application/pdf, 雑誌掲載論文, A sensitive, rapid, and simple method has been developed for the determination of trace amounts of iodide ion by means of flow injection analysis based on the catalytic reduction of sulfatocerium (IV) ion by
arsenic trioxide in sulfuric acid. A sample solution was injected into a redistilled water stream which flowed together with the pre-mixed cerium (IV) and arsenic trioxide in sulfuric acid solution. The sample in the reagent stream was first heated to 60 ℃ to promote the reaction and then cooled to 20 ℃ before being passed into a flow cell. The detection is based on a discoloration of the trisulfatocerium (IV) complex at 312 nm by spectrophotometer equipped with the flow cell (volume 8 μl, light path 10 mm). The optimal conditions were as follows; cerium (IV) : 1.30x 10 -3M in 1.00 M sulfuric acid (flow rate, 1.06 ml/min), arsenic trioxide: 2.40X 10-2 M in 1.00 M sulfuric acid (flow rate, 1.07 ml/min), flow rate of redistilled water: 4.22 ml/min, reaction time: 0.67 min, reagent mixing tube: 180 cm(0.2 cm i.d.), heating tube: 136cm(0.2 cm i.d.), cooling tube: 67 cm(0.2 cm i.d.), sample volume: 2.69 ml. A linear relationship was obtained
between the peak height (absorbance change based on a discoloration) and concentration of iodide ion in the range of 0～50 ppb. The detection limit (S/N: 2) was 1 ppb iodide ion. The sampling rate was 30 samples/h. The reactivity of the sulfatocerium (IV) complexes varied with the number of ligands. The trisulfato complex showed a remarkable catalytic reactivity, whereas the monosulfato complex showed no obvious reactivity. It was found that thiocyanate ion showed high positive interference. Iodide ion in rainwater was determined by the standard addition method without preconcentration. The iodide ion content in rainwater was (1～2) ppb (R.S.D.10 %)., http://www.jsac.or.jp/bunka/bunsekikagaku.html},
 pages = {23--28},
 title = {フローインジェクション法による極微量ヨウ化物イオンの接触分析定量},
 volume = {32},
 year = {1983},
 yomi = {デグチ, トシオ and タナカ, アキラ and サネマサ, イサオ and タナカ, アキラ}
}